For Gina Carano, it’s a good thing that her next opponent, Cristiane “Cyborg” Santos, is the scariest fighter south of the equator. If she wasn’t, Carano would have a hard time getting into the gym.

On Saturday, history will be made in San Jose, Calif., when the two face off as headliners of a major MMA card in the midst of a headline-filled summer. Strikeforce, the sole second of the UFC, booked the fight for five, five-minute rounds to the objections of some of its fighters. The logic was that female fighters always steal the show, especially when one of those fighters is the first and only female to crossover on the mainstream radar.